Rotary pump.



Witnesses/ 1 in /e nt0r,.

J. J. TOKHEIM.

ROTARY PUMP.

APPLICATION FILED mum, 1912.

1,040,057, Patented Oct. 1', 1912.

by l

Attorneys in ii -534; as]

PUMP.

:E l@,@57, Specification of Letters. law'sent.

Application filed Fehruarys, isle. sei'ial in}. emcee.

To all whom ii owe/concern:

Be it known that. L JOHN J. 'icnnnmt, a

I pertinentis the circulating compartment,

for water when it isdesired' to reduce the temperature due to the friction oi. the mow mg parts; or for steam where it is desired to heat the pump cylinders or carhura-te or gasify the fiuidthat it is desired to pump, such for instance as gasolene in dry cleaning estehlishmenis. I

A further object of the present invention is the provision of a rotary pomp provided with a plurality of radially disposed pump, cylinders, the pistons o -said. pump cylinders being operated from a common eccentric wh ch eccentric is disposed within a cen-' ti -ally disposed lnln'icanaholding compartment the pump casing being further, provided with an annular inlet chamber which is in commnnicstion'with each of thepump cylinders through a check valved controlled duct, and an exhaust chamber which is also in communication with all eat the pump cylinders through individually controlled check valve ducts A still further object of the present invention. is a novel form of closure for the heads of the respective pump cylinders, each. one of which bodily carries the intake and exhaust check valves, whereby the removal of the cap exposes all of the" delicate parts of each pump cylinder.

With the foregoing and'other objects in View which will appear as the description proceeds, the invention resides in the com hination and arrangement of parts andv in the details of construction hereinafter described and claimed, it being understood that changes .in the precise embodiment of invention herein disclosed can be made within the scope of whatis claimed without departing from the spirit of the invention.

'tive cylinders 6.

In the {ll'tiWiIlgS Figure l a Li central sectional View through the casing showing all 01" th pump cylinders, one of the pistons being shown in section to iilos irate the connectici'i thereof with its red. Fig. 2 is a. section taken on line 2 5) 05533 1, the sameheing; through the complete pump,

Referring to the drawings, the numeral 1 designates the main casting of the pump which is provided with the outs! ring and the inner concentcicring 3, said. rings with. the Wall of the casting providing the outer or extreme circulating e shown in Fig. 2 hasthe narrow reduced passage ways 5 and 5 upon each side the respective reniovahly disposed pump cylindens G,- whereby complete circulation of the cooling or heating fluid may be permitted within thechanihei- Li: and shoe t, the i'espec- The inner ends of the cylinders are screw threaded and fit within the threaded-apertures 7 of the inner hand 3 while outer ends extend throl'sgh the apertures of the reinforced portions 8 of the outer casing 01" ring 52, thus providing means whereby the cylinders 6 are Tin-idly smipossted by the easing and in proper relation to each other, the preferable form of pump employing three of these cylinders. as clearly; iliustra'ted in Fig.1. U

- The inner iring forms the peripheral a I if walls oi the lubricantcontaining compertment 9 which. is sealed by the inte cal castingat one side while at the other side it- 113 sealed with the removable cove? 1d.

The reduced portion-11 of the operating shaft is jonrnaled in this center of the end of the chars 9 while in L: journal her; 12 3 of the removable cap 10 rotatahly fits the enlarged g'ournal 13 of the shaft which is provided withdthe eccentric lat within the lubricant chamber 9 and carries the Tespec tive bands or rings 15,16 and 111 which connect the respective pistoneods 18, 19 and 20 properly upon the eccentric, so that the rotation of 'the'shaift will operate the respective piston heads 21 mounted ior 'eciprw cation within their respective pomp cylinders 16.

Each onset the pistonsis composed of separable members, theiower or main meinher 22 as clearly shown being provided with the concentric threaded stem 28 for the reception of the outer. clamping dish 2% so that the metal plates 25 and the two flexible gaskets 526 and 27 will be properly held in position to produce the desired tight joint within the pump cylinder, the disk 24 being so disposed as to be readily removable 'athat'will lead the fluid to be compressed or" pumped into the chamber 27. Each of the through the outer open end of each cylinder when necessary.

Providedupon the outer face of the main casting 1 adjacent-to the chamber 4 is the annular intake chamber 27' which is provided with the intake. port 28, to which may be connected any form of pipe or connection respective pumps is sealed with the cap 29,

all of which are identicalin construction, as

clearly, shown in Fig. 2, and is provided with the check valved controlled intake port 30 which is in communicatio'n with the 'intake chamber 27 ',Y the check valve 31 being held in place by means of the removable cap or plug 32, so that it normally closes the port 30 and is opened upon the in-stroke of its respective piston 21. The duct 33 of the cap'29 leads from the check valve port to the upper end of its respective pump cylinder 6, whilethe port 3,4 controlled by the exhaust check valve 35 provides an exhaust chamber upon the out-stroke of the'pis'ton, to permit the fluid to enter into the annularly disposed; exhaust chamber 36 so that the fluid is xhaustedthrough the port 37 to any desited place;

, Theexhaust valve 35. is held place by means of the removable cap orplug 38 carriedby the cap 29, thus placing both of the valves of each pump in ready access to theoperator without the necessity of taking the main casing apart, 'while, when it is desirable to obtain access to the pump piston, it is simply necessary to -remove the entire cap 29 thus exposing the inner endaof each respective pump-cylinderb so that access may beha'd to the piston to repair the same. In order to properly pack the'reduced portion 11 of the'shaft andlthe-enlarged portion 13 thereof, the respective stuifing boxes 39 and 40 are employed, while to permit the proper introductions of the lubricant within the chamber 9, the port 41 is provided while thesealed port 42 provides a means whereby the said chamber may be emptied when desired without the necessity of removing the top or cover 10.

From the foregoing description taken in connection with the drawings, it is evident that a rotary pump constructed according caps 32 and 38 may be removed without necessitating the removal of the main carrying cap 29.

The lubricant chamber 9 may be filled with the. lubricantior it may be supplied from a circulating feed, or a limited. amount of lubricant may be placed therein, and by reason of the fact that it is confined and practically hermetically sealed, all of the moving partswill be properly lubricated with the least possible waste of lubricant, as

all of the moving parts are. directly in communication with the chamber 9.

By reason of the fact that the intake and exhaust chambers 28 and 36 respectively, are cast integral with the main casting 1 of the pump, it is evident that a single intake conduit may be connected thereto, and a single intake and exhaust conduit may be connected to the respective chambers and yet place the same so as to be acted upon by the respective pumps in succession during the rotating of the shaft and its eccentric 14.

What is claimed is:

1. A rotary pump, having amain casing provided with two concentrlc chambers, the

inner chamber being a sealed lubricant holding chamber, a-plurality of pump cylinders in communication with said lubricant chamber and'opening exteriorly of the main casing, a shaft ou rnaled in the lubricant chamber and having an eccentric disposed within the chamber, a plurality of plungers operably connected to the eccentric, one to each cylinder, an intake and exhaust valve carrying cap connected tothe main casing and sealing each pump cylinder, said main casing being provided with an annular intake chamber in communication through the intake port with each pump cylinder, and

with an annular exhaust chamber upon the opposite side of the casing to the intake chamber in communication with the pump cylinders through the exhaust ports thereof. 1

2. A rotary pump, having a main casing provided with a centrally disposed cylindrical portion providing a lubricant carrying and shaft journaling chamber, a circulating chamber removably disposed pump cylinders in com munication with the lubricant chamber exteriorly of the main casing and providing disposed concentrically about said lubricant chamber, a plurality of upon opposite sid'esthereof reduced passages to form a complete ,circulation with the circulating chamber of the casing, a piston mounted for reciprocation in each cylinder and accessible from the outer end of each cylinder, a shaft mounted within the lubricant chamber, a plurality of piston rods connected to the shaft'and to the piston, a removable cap connected to the main casing and sealing the outer end of the respective pump cylinders, and an intake and exhaust check valve carried by each cap for controlmemes? ling the intake and exhaust of flnid due to the reciprocation of the piston.

3. A rotary pump having a, main casing provided with a, centrally disposed cylindrical portion providing a lubricant carrying and shaft journeling chamber, a circulating chamber disposed concentrically about said lubricant chamber, a lurelity of removably disposed pump ,cylin ers in communication with the luhricentchamber exteriorly of the main casing and providing upon opposite sides thereof reduced passages to form a complete circulation with the circulating chamber of the casing, a piston mounted for reciprocation in each cylinder, and accessifrom the outer end of each cylinderj-aeheilt mounted Within the lubricant cham-.

berye plurality; of piston rods connected to the shaft end'to'the pistons, a removable cap connected to the main casing and sealing the outer end ofthe respective pump cylinders, seidmain casing being provided with two annular oppositely disposed intake and exhaust chambers connected to the main casing one to each pump cylinder, and provided with ports therethrough forming connnunication with the intake chamber and exhaust chamber; a check valve carried by the cap for controlling the intake, and another check valve carried hy-the cap for controlling the eithafist. I

In testimony that I claim the foregoing as my own, I have hereto ailixed my signa ture in the presence of two 'witnesses.

I J OHN J TOKHEIM. Witnesses:

yOsso SERosA, Y

W M. KAIOENA. 

